Die durch die Erfindung erreichten Vorteile sind im wesentlichen darin zu sehen, dass Dank der erfindungsgemässen Materialwahl und -verarbeitung die elastische Membran in einer entsprechenden Kammer nicht mehr in dem Mass verletzt wird, wie bei Verwendung einer aufgespritzten Kunststoffkugel auf eine Kanüle und zudem durch die Elastizität der Membran gewisse Toleranzen in der Herstellung ausgeglichen werden können. The advantages achieved by the invention are to be seen essentially in the fact that due to the inventive choice of material and processing of the elastic membrane in a respective chamber is no longer violated in the mass, as when using a sprayed-on plastic ball on a cannula, and also by the elasticity the membrane certain tolerances in the manufacture can be compensated.

Bevorzugte Ausführungsbeispiele der Erfindung sind in den Figuren dargestellt. Preferred embodiments of the invention are illustrated in the figures.

Claims (8)

A connecting system for connecting a container containing a drug
and a container or body to receive a drug, including a cannula (21) with a
rounded-off cannula termination (22) and a chamber (1) having two
openings (2, 3), the chamber containing an elastic material (4), wherein
the elastic material (4) connects the two openings (2, 3) through a passage
(5) and wherein the rounded-off cannula termination (22) comprises an
organic material, characterised in that the cannula termination (22) is
spherical.

A connecting system according to claim 1 characterised in that the
roughness values of the cannula termination (22) are at a maximum 8
micrometres.

A connecting system according to claim 2 characterised in that the
cannula termination (22) is made from metal, preferably chromium-nickel
steel.

A connecting system according to one of claims 1 to 3
characterised in that the passage (5) is self-closing by the elastic
diaphragm (4).

A connecting system according to one of claims 1 to 4
characterised in that the chamber (1) is at the same time a port chamber.

A connecting system according to one of claims 1 to 4
characterised in that the chamber (1) is a connecting portion to a cannula
carrier (41).

A connecting system according to one of claims 1 to 4
characterised in that the chamber (1) is a connecting portion to a drug
ampoule (51).

A connecting system according to one of claims 1 to 4
characterised in that the chamber (1) is part of a drug ampoule (51).

Injection section length adjusting device for injection needle, has stop mechanism connected with needle guard in axially firm or fixed manner and is in stop contact during movement of guard in proximal direction with another mechanism